Answer:
Maximum height, h = 10 m
Explanation:
It is given that,
Mass of golf ball, m = 45 g = 0.045 kg
The ball comes down on a tree root and bounces straight up with an initial speed of 14.0 m/s.
We need to find the height the ball will rise after the bounce. It is based on the conservation of energy such that,
h is maximum height raised by the ball
So, the ball will raised to a height of 10 meters.
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Answer:
(A) 2.4 N-m
(B)
(C) 315.426 rad/sec
(D) 1741.13 J
(E) 725.481 rad
Explanation:
We have given mass of the disk m = 4.9 kg
Radius r = 0.12 m, that is distance = 0.12 m
Force F = 20 N
(a) Torque is equal to product of force and distance
So torque , here F is force and r is distance
So
(B) Moment of inertia is equal to
So
Torque is equal to
So angular acceleration
(C) As the disk starts from rest
So initial angular speed
Time t = 4.6 sec
From first equation of motion we know that
So
(D) Kinetic energy is equal to
(E) From second equation of motion
